Red hot! Jennifer Lopez shows off her famous derrière in a sizzling snap... as she gets back to work after romantic trip with Ben Affleck in Montana over the weekend

JENNIFER Lopez stunned in a sexy red dress as she returned to work following her romantic Montana getaway with Ben Affleck.

The pictures come after a source revealed that her ex-fiance, Alex Rodriguez, believed her romance with Ben was “fake news.”

Jennifer Lopez returned to work on Tuesday
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Jennifer Lopez returned to work on TuesdayCredit: MEGA/BACKGRID

She was filming a commercial for Coach
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She was filming a commercial for CoachCredit: MEGA/BACKGRID

She made sure to keep herself updated with her phone
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She made sure to keep herself updated with her phoneCredit: MEGA/BACKGRID
Jennifer, 51, is not letting the news of her new romance with Ben, 48, stop her from hustling as she returned to work.

She recently came back from her vacation with the Batman actor to Montana following a heart-to-heart conversation where they decided to give their romance a second shot 18 years later.

The singer showed up on the Miami set in a stunning red dress featuring a high-slit and a flowy skirt.

She appeared in high spirits as she danced and smiled at the cast and crew, before stepping in front of the camera.

She twirled in front of the camera while dancing to her song Let's Get Loud
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She twirled in front of the camera while dancing to her song Let’s Get LoudCredit: MEGA/BACKGRID

She showed off her toned legs
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She showed off her toned legsCredit: MEGA/BACKGRID

She also seemed very friendly with those around her
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She also seemed very friendly with those around herCredit: MEGA/BACKGRID
While filming a commercial for Coach, she twirled and danced around with a fellow actress to a Cuban band playing her song, Let’s Get Loud.

Jennifer, who shares twins with ex-husband Marc Anthony, completed her stunning look by wearing her hair down her back and covering up with a gray overcoat.

Off-camera, she was snapped sitting in a lawn chair and checking her phone non-stop, either juggling work commitments or awaiting a text from her rekindled boo, Ben.

JLo had plenty of fun during the shoot
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JLo had plenty of fun during the shootCredit: MEGA/BACKGRID

She even held hands with one of her co-stars
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She even held hands with one of her co-starsCredit: MEGA/BACKGRID

She was all smiles while talking to crew
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She was all smiles while talking to crewCredit: MEGA/BACKGRID

She completed her look with a gray overcoat
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She completed her look with a gray overcoatCredit: MEGA/BACKGRID

She also posed while resting on a lawn chair
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She also posed while resting on a lawn chairCredit: MEGA/BACKGRID